Checklist1 of Vascular Flora of Montaña de Oro State Park San Luis Obispo County, California (07 June 2019) David J. Keil Robert F. Hoover Herbarium Biological Sciences Department California Polytechnic State University San Luis Obispo, California Scientific Name Common Name Family Rare n Abronia latifolia yellow sand-verbena NYCTAGINACEAE v n Abronia maritima beach sand-verbena, red NYCTAGINACEAE 4.2 v sand-verbena n Abronia umbellata var. umbellata purple sand-verbena NYCTAGINACEAE v n Acer macrophyllum big-leaf maple SAPINDACEAE v n ❀ Achillea millefolium yarrow ASTERACEAE v n Acmispon brachycarpus shortpod deervetch FABACEAE v 1 Please notify the author of additions or corrections to this list ([email protected]). ❀ — See Wildflowers of San Luis Obispo, California, second edition (2018) for photograph. Most are illustrated in the first edition as well; old names for some species in square brackets. n — California native n1 — California native but planted at Montaña de Oro. i — exotic species, introduced to California, naturalized or waif. v — documented by one or more specimens (Consortium of California Herbaria record; specimen in OBI; or collection that has not yet been accessioned) o — observed during field surveys; no voucher specimen known R—California Rare Plant Rank Scientific Name Common Name Family Rare n ❀ Acmispon glaber var. glaber common deerweed FABACEAE v n Acmispon heermannii var. orbicularis woolly deer-vetch FABACEAE v n Acmispon junceus var. biolettii Biolett's rush deerweed FABACEAE v n Acmispon junceus var. junceus common rush deerweed FABACEAE v n Acmispon maritimus var. maritimus coastal deer-vetch FABACEAE v n Acmispon micranthus fishhook deervetch FABACEAE v n Acmispon parviflorus miniature deervetch FABACEAE o n ❀ Acmispon strigosus strigose deer-vetch FABACEAE v n Actaea rubra baneberry RANUNCULACEAE v n ❀ Adelinia grandis Pacific hound's tongue BORAGINACEAE v n ❀ Adenostoma fasciculatum var. fasciculatum chamise ROSACEAE v n Adiantum aleuticum five finger fern PTERIDACEAE o n Adiantum jordanii California maidenhair fern PTERIDACEAE v n ❀ Ageratina adenophora sticky snakeroot ASTERACEAE v n ❀ Agoseris grandiflora var. grandiflora large-flowered mountain- ASTERACEAE o dandelion n Agrostis exarata western bentgrass, spike POACEAE v bentgrass n Agrostis gigantea redtop bentgrass POACEAE v n Agrostis pallens San Diego bentgrass POACEAE v i Agrostis stolonifera creeping bentgrass POACEAE v i Agrostis tandilensis Kennedy's bentgrass POACEAE v i Aira caryophyllea silver hairgrass POACEAE o n Allophyllum glutinosum sticky false-gilia POLEMONIACEAE o n Ambrosia chamissonis beach bursage, beachbur ASTERACEAE v n ❀ Amsinckia menziesii small-flowered fiddleneck BORAGINACEAE v n Amsinckia spectabilis var. microcarpa mesa fiddleneck BORAGINACEAE v Scientific Name Common Name Family Rare n Amsinckia spectabilis var. spectabilis seaside fiddleneck BORAGINACEAE ? n Anaphalis margaritacea pearly everlasting ASTERACEAE v n ❀ Antirrhinum kelloggii climbing snapdragon PLANTAGINACEAE v n Aphanes occidentalis western parsley-piert ROSACEAE v n Aphyllon californicum subsp. grande California broomrape OROBANCHACEAE v n Apiastrum angustifolium mock-celery APIACEAE v i Apium graveolens celery APIACEAE v i Aptenia cordifolia baby sun-rose AIZOACEAE v n Aralia californica California spikenard, elk- ARALIACEAE v clover n ❀ Arbutus menziesii madrone ERICACEAE v n Arctostaphylos crustacea subsp. crustacea brittle-leaved manzanita ERICACEAE v n Arctostaphylos morroensis Morro manzanita ERICACEAE 1B.1 v n Arctostaphylos pechoensis Pecho manzanita ERICACEAE 1B.2 v n Arctostaphylos tomentosa subsp. daciticola dacite manzanita ERICACEAE 1B.1 ? n ❀ Artemisia californica California sagebrush ASTERACEAE v n ❀ Artemisia douglasiana mugwort ASTERACEAE v n Artemisia dracunculus wild tarragon ASTERACEAE v i Asparagus asparagoides bridal creeper, florist's- ASPARAGACEAE v smilax i Asparagus officinalis subsp. officinalis asparagus ASPARAGACEAE v i ❀ Asphodelus fistulosus asphodel ASPHODELACEAE v n Astragalus nuttallii var. nuttallii ocean bluff locoweed, FABACEAE 4.2 v ocean bluff milk-vetch n Astragalus nuttallii var. virgatus San Francisco milk-vetch FABACEAE v n Astragalus pomonensis Pomona locoweed FABACEAE v n Athyrium filix-femina var. cyclosorum lady fern WOODSIACEAE v Scientific Name Common Name Family Rare n Atriplex leucophylla beach saltbush CHENOPODIACEAE v i Atriplex prostrata fat-hen orach CHENOPODIACEAE v i Atriplex semibaccata Australian saltbush CHENOPODIACEAE v n Atriplex watsonii Watson's saltbush CHENOPODIACEAE v i Avena barbata slender wild oats POACEAE v i Avena fatua common wild oats POACEAE v i Avena sativa cultivated oats POACEAE v n ❀ Baccharis glutinosa marsh baccharis ASTERACEAE v n ❀ Baccharis pilularis coyote bush ASTERACEAE v n ❀ Barbarea orthoceras American wintercress BRASSICACEAE v n ❀ Blitum californicum [Chenopodium California goosefoot CHENOPODIACEAE v californicum] n Bolboschoenus maritimus subsp. paludosus alkali bulrush, saltmarsh CYPERACEAE v bulrush n Bolboschoenus robustus x B. maritimus hybrid bulrush CYPERACEAE v i Brachypodium hybridum false brome POACEAE o i ❀ Brassica nigra black mustard BRASSICACEAE o i Brassica oleracea cabbage BRASSICACEAE v i ❀ Brassica rapa field mustard BRASSICACEAE v n Bromus carinatus var. carinatus California brome POACEAE v i Bromus catharticus var. catharticus rescue grass POACEAE v i Bromus catharticus var. elatus Chilean brome POACEAE v i Bromus diandrus ripgut brome POACEAE v i Bromus hordeaceus soft chess brome POACEAE v i Bromus madritensis foxtail chess POACEAE v n Bromus pseudolaevipes woodland brome POACEAE v i Bromus rubens red brome POACEAE v Scientific Name Common Name Family Rare i Cakile maritima European sea rocket BRASSICACEAE v n Calandrinia breweri Brewer's calandrinia MONTIACEAE 4.2 v n ❀ Calandrinia menziesii [Calandrinia ciliata] red maids MONTIACEAE v n ❀ Calystegia macrostegia subsp. cyclostegia coast morning glory CONVOLVULACEAE v n Calystegia soldanella beach morning glory CONVOLVULACEAE v n Camissonia strigulosa strigose suncup ONAGRACEAE o n Camissoniopsis cheiranthifolia subsp. beach suncup, beach ONAGRACEAE v cheiranthifolia evening-primrose n Camissoniopsis micrantha small-flowered suncup ONAGRACEAE v i Capsella bursa-pastoris shepherd's purse BRASSICACEAE o n ❀ Cardamine californica milk maids, rain bells, BRASSICACEAE v California toothwort n Cardionema ramosissimum sand mat CARYOPHYLLACEAE v i ❀ Carduus pycnocephalus Italian thistle ASTERACEAE v i Carduus tenuiflorus slender-flowered thistle ASTERACEAE v n Carex globosa round-fruited sedge CYPERACEAE v n Carex obnupta slough sedge CYPERACEAE v n Carex praegracilis black creeper sedge CYPERACEAE o n Carex subbracteata small-bracted sedge CYPERACEAE v i Carpobrotus chilensis Chilean iceplant, sea-fig AIZOACEAE v i ❀ Carpobrotus edulis highway iceplant AIZOACEAE v n ❀ Castilleja affinis subsp. affinis coast Indian paintbrush OROBANCHACEAE v n Castilleja densiflora subsp. densiflora dense flowered owl's- OROBANCHACEAE v clover n Castilleja exserta subsp. exserta common owl's-clover OROBANCHACEAE v n Ceanothus cuneatus var. fascicularis dune buckbrush RHAMNACEAE 4.2 v n ❀ Ceanothus cuneatus var. ramulosus coast buckbrush RHAMNACEAE v Scientific Name Common Name Family Rare n ❀ Ceanothus papillosus wartleaf ceanothus RHAMNACEAE v n Ceanothus thyrsiflorus var. griseus Carmel ceanothus RHAMNACEAE v i Cenchrus clandestinus kikiyu grass POACEAE v i Cenchrus longisetus feathertop fountaingrass POACEAE v i ❀ Centaurea melitensis tocalote, Maltese star ASTERACEAE v thistle i Cerastium glomeratum annual mouse-ear CARYOPHYLLACEAE v chickweed i Chenopodiastrum murale [Chenopodium pigweed goosefoot CHENOPODIACEAE v murale] n Chenopodium berlandieri var. zschackei pit-seeded goosefoot CHENOPODIACEAE v n Chenopodium littoreum coastal goosefoot CHENOPODIACEAE 1B.2 v n Chloropyron maritimum subsp. maritimum salt marsh bird's-beak OROBANCHACEAE 1B.2 v n Chorizanthe angustifolia narrow-leaved spineflower POLYGONACEAE v n ❀ Chorizanthe palmeri Palmer's spineflower POLYGONACEAE 4.2 v n Chrysolepis chrysophylla var. minor golden chinquapin FAGACEAE v n Cicuta douglasii western water hemlock APIACEAE v n Cirsium brevistylum Indian thistle ASTERACEAE v n Cirsium occidentale var. occidentale cobwebby thistle ASTERACEAE v i ❀ Cirsium vulgare bull thistle ASTERACEAE v n Clarkia cylindrica subsp. cylindrica speckled clarkia ONAGRACEAE v n Clarkia prostrata prostrate clarkia ONAGRACEAE v n ❀ Clarkia purpurea subsp. quadrivulnera fourspot clarkia ONAGRACEAE v n Claytonia parviflora subsp. parviflora narrow-leaved miner's MONTIACEAE v lettuce n Claytonia perfoliata subsp. mexicana common miner's lettuce MONTIACEAE v n ❀ Claytonia perfoliata subsp. perfoliata common miner's lettuce MONTIACEAE v Scientific Name Common Name Family Rare n ❀ Clematis ligusticifolia virgin's bower RANUNCULACEAE v n ❀ Clinopodium douglasii yerba buena LAMIACEAE v n Collinsia bartsiifolia var. davidsonii Davidson's Chinese PLANTAGINACEAE v houses n Collomia heterophylla variable-leaved POLEMONIACEAE v trumpetflower i Conicosia pugioniformis slender-leaved iceplant AIZOACEAE v i ❀ Conium maculatum poison hemlock APIACEAE v n ❀ Cordylanthus rigidus subsp. rigidus thread-leaved bird's-beak OROBANCHACEAE o n ❀ Corethrogyne filaginifolia California-aster ASTERACEAE v n ❀ Cornus sericea subsp. sericea red-osier dogwood CORNACEAE v i Cortaderia jubata jubata grass POACEAE v i ❀ Cotula coronopifolia brass buttons ASTERACEAE v n ❀ Crassula connata